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  4. 高脂血症對心肌微循環血管屏障的影響及其在缺血—再灌流傷害中之角色
 
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高脂血症對心肌微循環血管屏障的影響及其在缺血—再灌流傷害中之角色

Date Issued
2004
Date
2004
Author(s)
林隆君
DOI
922314B002324
URI
http://ntur.lib.ntu.edu.tw//handle/246246/23664
Abstract
Hypercholesterolemia (HC) is associated with atherosclerosis in systemic arteries. Its impacts
on microcirculatory disturbances are receiving rigorous investigations. In this study, we used the
cholesterol-enrich diet to treat the rabbit. The dynamic contrast-enhanced magnetic resonance
imaging showed that the induced hypercholesterolemia was associated with increase in
permeability surface area product but did not influence the myocardial blood flow. The
pathological examination of those hypercholesterolemic rabbits delineated greater density of
isolectin- and smooth muscle α -actin bound microvessels. Patchy expression of VEGF in
perivascular and interstitial space of myocardium was also noted.
Hypercholesterolemia was associated with increased coronary leakage without evident
perfusion defect. Increased microvessel density, either pericyte-bound or not, suggested
microvascular remodeling. VEGF could be induced in the setting and served as a possible
underlying mechanism.
Subjects
Dynamic contrast-enhanced magnetic resonance imaging
Hypercholesterolemia
Microcirculatory permeability
VEGF
Publisher
臺北市:國立臺灣大學醫學院內科
Type
report
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